Technician A says a magnetic pulse generator type sensor generates a small AC voltage each time one of the machined slots in the trigger wheel passes by. Technician B says some ignition systems use dual Hall-effect sensors that produce a 3x and 18x/revolution pulse. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Both technicians are correct. Technician A describes the operation of a magnetic pulse generator, which indeed generates an AC voltage with each passing slot on a trigger wheel. Technician B accurately describes the use of dual Hall-effect sensors in some ignition systems, which can produce different pulse rates per revolution, such as 3x and 18x, to provide precise timing information.

Technician a Says a Magnetic Pulse Generator Type Sensor Generates